We study the singularities of multivalued solutions of a quasilinear hyperbolic system with two independent and two dependent variables that satisfies the strong nonlinearity condition. For such solutions we obtain a local left-right classification of their projections onto the plane of independent variables at points of finite multiplicity of rank 1.

中文翻译：

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拟线性双曲系统的多值解的奇异性

我们研究具有两个独立变量和两个独立变量的拟线性双曲系统满足强非线性条件的多值解的奇异性。对于这样的解决方案，我们获得了它们在独立变量平面上的秩为1的有限多重点上的投影的局部左右分类。